公开(公告)号：US20240372067A1

公开(公告)日：2024-11-07

申请号：US18773844

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Xiaobin DONG ,  Ming ZHANG

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/587 ,  H01M4/62 ,  H01M10/054

Abstract: The present application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The negative electrode plate includes: a negative electrode current collector; and a negative electrode film layer which is located on at least one surface of the negative electrode current collector and includes first negative electrode active material particles and second negative electrode active material particles, the first negative electrode active material particles including a plurality of adsorption holes and having a tap density of 0.4 g/cm3-1.4 g/cm3, wherein a difference d in median particle size between the first negative electrode active material particles and the second negative electrode active material particles satisfies: 3 μm≤d≤19 μm, and a compaction density PD of the negative electrode film layer satisfies: 0.8 g/cm3≤PD≤1.4 g/cm3.

公开(公告)号：US20230420679A1

公开(公告)日：2023-12-28

申请号：US18121707

申请日：2023-03-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG ,  Ziyi YIN ,  Yacheng LIU ,  Tongxian ZHANG

IPC: H01M4/62 ,  H01M4/04

CPC classification number: H01M4/622 ,  H01M2004/028 ,  H01M4/0404

Abstract: The present disclosure provides a positive electrode slurry comprising a polyether siloxane, wherein the polyether siloxane may comprise at least the following structural units:




wherein D is methyl or ethyl; A is hydrogen, halogen or haloalkyl; B is hydroxyl, R, OR, or ROR′, wherein the R and R′ are each independently a linear or branched alkyl group containing 1 to 8 carbons; and E is phenyl, alkyl-substituted phenyl, ether-substituted phenyl, or halophenyl.

公开(公告)号：US20240213488A1

公开(公告)日：2024-06-27

申请号：US18416554

申请日：2024-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG ,  Yi ZHOU

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/02

CPC classification number: H01M4/628 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/133 ,  H01M4/1393 ,  H01M2004/021 ,  H01M2004/027

Abstract: An anode plate includes a current collector and an anode active material layer. The anode active material layer is disposed on at least one surface of the current collector. The anode active material layer includes a fluoropolymer and a carbon nanotube; the fluoropolymer is dispersed in the anode active material layer; and the carbon nanotube is wrapped around the fluoropolymer and an anode active material in the anode active material layer.

公开(公告)号：US20220399579A1

公开(公告)日：2022-12-15

申请号：US17884538

申请日：2022-08-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huang TANG ,  Ming ZHANG ,  Hao DONG ,  Qifan WU ,  De LIN

IPC: H01M10/42 ,  H01M4/62 ,  C08F220/56

Abstract: A secondary battery includes a positive electrode sheet which includes a positive-electrode current collector, a positive-electrode active material layer, and a coating layer arranged between the positive-electrode current collector and the positive-electrode active material layer. The coating layer includes a conductive agent and a copolymer.

公开(公告)号：US20240021828A1

公开(公告)日：2024-01-18

申请号：US18371689

申请日：2023-09-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/587

CPC classification number: H01M4/622 ,  H01M4/133 ,  H01M4/587 ,  H01M2004/027

Abstract: The present application relates to a styrene-acrylic emulsion and a preparation method therefor, an anode plate, a secondary battery and an electric device. A Dv50 particle size of a latex particle in the styrene-acrylic emulsion is 350-900 nm, optionally 350-800 nm. The anode plate includes an anode current collector; and an anode active material layer disposed on at least one surface of the anode current collector, the anode active material layer includes a hard carbon material and a binder, the binder is derived from the above-mentioned styrene-acrylic emulsion.

公开(公告)号：US20240021864A1

公开(公告)日：2024-01-18

申请号：US18449311

申请日：2023-08-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ming ZHANG ,  Qifan WU

IPC: H01M10/056 ,  H01M10/04 ,  H01M50/204

CPC classification number: H01M10/056 ,  H01M10/045 ,  H01M50/204

Abstract: An electrolyte, a secondary battery, a battery, and an electrical device are described. The electrolyte comprises a C2-C4 alkene substituted with a halogen atom and/or a partially halogenated saturated polyalkene. By adding the C2-C4 alkene substituted with a halogen atom and/or the partially halogenated saturated polyalkene to the electrolyte, an electrochemical reduction reaction may produce on a surface of a negative electrode active material to generate a solid electrolyte interphase; so as to improve a low temperature performance and service life.

公开(公告)号：US20230369598A1

公开(公告)日：2023-11-16

申请号：US18208350

申请日：2023-06-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present disclosure provides a positive electrode slurry containing polyether polyol, where the polyether polyol has the following constitutional formula:






where R1, R2, R3, R4, R5, and R6 are as defined in the specification.

公开(公告)号：US20230369595A1

公开(公告)日：2023-11-16

申请号：US18340019

申请日：2023-06-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG

IPC: H01M4/62 ,  H01M4/58 ,  H01M4/136 ,  C07C43/23

CPC classification number: H01M4/62 ,  H01M4/5825 ,  H01M4/136 ,  C07C43/23 ,  H01M2004/021

Abstract: A positive electrode slurry contains polyether polyol, where the polyether polyol has the following constitutional formula:




where R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and Y are as defined in the specification.

公开(公告)号：US20230361303A1

公开(公告)日：2023-11-09

申请号：US18352961

申请日：2023-07-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG

IPC: H01M4/62 ,  C09D5/24 ,  C09D171/02 ,  C09D7/61 ,  H01M4/58 ,  H01M4/136

CPC classification number: H01M4/62 ,  C09D5/24 ,  C09D171/02 ,  C09D7/61 ,  H01M4/5825 ,  H01M4/136 ,  H01M2004/028

Abstract: A positive electrode slurry containing polyether polyol, where the polyether polyol has the following constitutional formula:




where n1, n2, n3, R1, R2, R3, R4, R5, R6, B1, and B2 are as defined in the specification are described. The addition of the polyether polyol described in this application can increase a coating weight of positive electrode plates, thereby increasing energy density of batteries.

公开(公告)号：US20230299300A1

公开(公告)日：2023-09-21

申请号：US18069170

申请日：2022-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ming ZHANG ,  Tongxian ZHANG ,  Qifan WU

IPC: H01M4/62 ,  H01M4/58 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C08K3/32 ,  C08K3/11

CPC classification number: H01M4/628 ,  H01M4/5825 ,  H01M4/623 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C08K3/32 ,  C08K3/11 ,  C08K2003/328 ,  C08K2003/324

Abstract: A positive electrode slurry includes a lithium-containing phosphate material, a first positive electrode additive, a second positive electrode additive, and a binder. The first positive electrode additive includes at least one of a compound represented by structural formula 1 or a compound represented by structural formula 2 below. R1 is selected from C2-C4 alkylene, alkenylene, and derivatives thereof, substituted or unsubstituted by halogen. R2 and R3 are each independently alkyl, alkenyl, alkynyl, or aryl, substituted or unsubstituted by halogen. The binder includes a polymer including a repeating unit represented by structural formula 3 below. A pH value of the second positive electrode additive is greater than or equal to 10.0.